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WHEN ON VENT FOR HEATING AFTER DRIVING FOR 10 ...

  • Tiny
  • Anonymous
  • 1996 Ford Aerostar
  • 24,000 miles

When on VENT for heating, after driving for 10 minutes or so, the heat gauge will slowly move to the L on "normal" and then drop back to the O. The rear heat blows ambient temperature.

I have replaced the small single-line vacumm switch that goes to a "t" and then to vacumm reservoir & into heater plenium.

Water pump is new.

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Monday, October 29th, 2012 AT 4:08 PM

1 Reply

  • Tiny
  • hmac300
  • Expert
  • 44,295 posts

Check to make sure rear is gettinghot water on both hoses then check actuators. Check coolant level if low have pressure tested for leaks.

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Monday, October 29th, 2012 AT 5:01 PM

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